# Relationship history for MSHA mine 4703056

Current hierarchy: **Jack  Pease → Super Aggregates → Waterford Pit**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Jack  Pease → Waterford Pit; 1988-03-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Alby Materials Inc → Waterford Pit; 1995-06-01 to 2007-01-21; source msha-controller-operator-history
- **controller_controls_mine:** Terry  Alby → Waterford Pit; 1995-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Terry  Alby → Alby Materials Inc; 1995-06-01 to 2007-01-21; source msha-controller-operator-history
- **operator_operates_mine:** Super Mix of Wisconsin, Inc. → Waterford Pit; 2007-01-22 to 2016-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Jack  Pease et al → Waterford Pit; 2007-01-22 to 2013-08-16; source msha-controller-operator-history
- **controller_controls_operator:** Jack  Pease et al → Super Mix of Wisconsin, Inc.; 2007-01-22 to 2013-08-16; source msha-controller-operator-history
- **controller_controls_operator:** Robert C  Epping et al → Super Mix of Wisconsin, Inc.; 2007-01-22 to 2013-08-16; source msha-controller-operator-history
- **controller_controls_mine:** Jack  Pease → Waterford Pit; 2013-08-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jack  Pease → Super Mix of Wisconsin, Inc.; 2013-08-17 to 2016-06-30; source msha-controller-operator-history
- **operator_operates_mine:** Super Aggregates → Waterford Pit; 2016-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jack  Pease → Super Aggregates; 2016-07-01 to current/open; source msha-controller-operator-history